A seven-year-old Russian boy adopted by an American couple arrived in Moscow yesterday alone and clutching a note from his 'parents' saying they don't want him any more.

The bewildered boy, named as Justin Artyom Hansen, does not speak any Russian, though he understands the language.

He was taken into care after arriving back in the country of his birth, though it was unclear how he had been allowed to fly without supervision from Washington or how he was permitted to leave the U.S. under such circumstances.